221604051023 has 8 divisors (see below), whose sum is σ = 228516307968. Its totient is φ = 214783347384.

The previous prime is 221604051001. The next prime is 221604051041. The reversal of 221604051023 is 320150406122.

It is a happy number.

221604051023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221604051023 - 2⁶ = 221604050959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221604050983 and 221604051001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221604051323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22883411 + ... + 22893092.

It is an arithmetic number, because the mean of its divisors is an integer number (28564538496).

Almost surely, 2^221604051023 is an apocalyptic number.

221604051023 is a deficient number, since it is larger than the sum of its proper divisors (6912256945).

221604051023 is a wasteful number, since it uses less digits than its factorization.

221604051023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45776653.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 221604051023 its reverse (320150406122), we get a palindrome (541754457145).

The spelling of 221604051023 in words is "two hundred twenty-one billion, six hundred four million, fifty-one thousand, twenty-three".